Carol of Lost Juniper Ranch says: Yes, they will stay buckskin. They do not have a grey gene. If they did they might go grey, like if the mother was grey. Stoney imparts a "dilute gene" to anything he is bred to. He is a "double dilute" and all he has is dilute genes, no color. So a buckskin is a dilute bay, a palomino is a dilute chestnut. A smokey black is a dilute black. Here is an interesting website explaining the whole thing: http://www.doubledilute.com/main.html